Touch Substrate and Display Device

ABSTRACT

There are provided a touch substrate and a display device, the touch substrate includes touch elements arranged in rows and columns, each of the touch elements includes first electrode blocks coupled together by a connection part and second electrode blocks coupled together by a bridge part, the bridge part crosses the connection part, and an insulation layer is provided between the connection part and the bridge part, the touch elements include a first touch element close to an arc-shaped edge of the touch substrate and a second touch element far away from the arc-shaped edge of the touch substrate, a cross point of the connection part and the bridge part in the first touch element is far away from the arc-shaped edge, and a cross point of the connection part and the bridge part in the second element is at a center position of the second touch element.

CROSS-REFERENCE TO RELATED APPLICATIONS

This is a Continuation of U.S. patent application Ser. No. 16/329,023,filed Feb. 27, 2019, a National Phase Application filed under 35 U.S.C.371 as a national stage of PCT/CN2018/090112 filed on Jun. 6, 2018, anapplication claiming the benefit to Chinese Application No.201710707271.4, filed on Aug. 17, 2017, the content of each of which ishereby incorporated by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of display technology, andin particular to a touch substrate and a display device.

BACKGROUND

There is an existing touch substrate having an arc-shaped edge, forexample, the touch substrate includes a plurality of first electrodesand a plurality of second electrodes, which are intersected with eachother, each of the first electrodes includes a plurality of firstelectrode blocks, adjacent first electrode blocks are coupled togetherby a connection part, each of the second electrodes includes a pluralityof second electrode blocks, adjacent second electrode blocks are coupledtogether by a bridge part, each of the first electrodes and each of thesecond electrodes intersect with each other at the connection part andthe bridge part, that is, the bridge part crosses the connection part,and an insulation layer is provided between the connection part and thebridge part. The touch substrate includes a plurality of touch elements,each of the touch elements includes at least one set of the connectionpart and the bridge part, which are crossed with each other, and thefirst electrode blocks and the second electrode blocks coupled to the atleast one set of the connection part and the bridge part. Generally, theconnection part and the bridge part which are crossed with each otherare at a center position of the touch element, either the firstelectrode blocks coupled together by the connection part or the secondelectrode blocks coupled together by the bridge part in the touchelement are configured as a touch driving electrode, and the remainingones coupled together are configured as a touch sensing electrode.

For example, in a case where at least a portion of edge of the touchsubstrate is arc-shaped, in the touch element close to the arc-shapededge, dimensions and shapes of the first electrode block and the secondelectrode block proximal to the arc-shaped edge are limited by thearc-shaped edge, thus areas of the first electrode block and the secondelectrode block proximal to the arc-shaped edge are significantly lessthan those of the first electrode block and the second electrode blockdistal from the arc-shaped edge, resulting in that the connection partand the bridge part in the touch element close to the arc-shaped edgeare too close to the edge of the touch substrate, thus increasing ashort-circuited risk between the connection part and the bridge part ofthe touch element and wires at the edge of the touch substrate, therebya lowered yield of the touch substrate is caused.

SUMMARY

An embodiment of the present disclosure provides a touch substratehaving an arc-shaped edge, including a plurality of touch elementsarranged in rows and columns, each of the touch elements includes firstelectrode blocks coupled together by a connection part and secondelectrode blocks coupled together by a bridge part, the bridge partcrosses the connection part, and an insulation layer is provided betweenthe connection part and the bridge part, the plurality of touch elementsinclude a first touch element close to the arc-shaped edge of the touchsubstrate and a second touch element far away from the arc-shaped edgeof the touch substrate, a cross point of the connection part and thebridge part in the first touch element is far away from the arc-shapededge of the touch substrate, and a cross point of the connection partand the bridge part in the second element is at a center position of thesecond touch element.

In some implementations, in a case where a closest distance from thecross point of the connection part and the bridge part in the firsttouch element to the arc-shaped edge of the touch substrate is greaterthan or equal to a predefined threshold value, the cross point of theconnection part and the bridge part in the first touch element is faraway from the arc-shaped edge of the touch substrate.

In some implementations, the predefined threshold value is a closestdistance from the cross point of the connection part and the bridge partin the second touch unit, arranged in a same row and in a same column asthe first touch unit, to an edge of the touch substrate.

In some implementations, the plurality of touch elements include aplurality of second touch elements far away from the arc-shaped edge ofthe touch substrate, cross points of connection parts and bridge partsin the second touch elements arranged in a same row are in a same row,cross points of connection parts and bridge parts in the second touchelements arranged in a same column are in a same column, the cross pointof the connection part and the bridge part in the first control elementis located at a side of the row of cross points of the connection partsand the bridge parts in the second touch elements arranged in the samerow as the first touch element, away from an edge of the touchsubstrate, and at a side of the column of cross points of the connectionparts and the bridge parts in the second touch elements arranged in thesame column as the first touch element, away from the edge of the touchsubstrate.

In some implementations, the cross point of the connection part and thebridge part in the first touch element is at an approximate centerposition of the first touch element.

In some implementations, a sum of areas of the first electrode blocks isequal to a sum of areas of the second electrode blocks in the firsttouch element.

In some implementations, the plurality of touch elements include aplurality of first touch elements.

In some implementations, the first electrode blocks, the secondelectrode blocks and the connection part in each of the touch elementsare provided in a same layer and formed of a same material.

In some implementations, the first electrode blocks, the secondelectrode blocks and the connection part in each of the touch elementsare formed of indium tin oxide (ITO).

In some implementations, the first electrode blocks are arranged in acolumn direction, and the second electrode blocks are arranged in a rowdirection, in the column direction, the first electrode blocks ofadjacent touch elements are formed as an integrative structure, and inthe row direction, the second electrode blocks of adjacent touchelements are formed as an integrative structure.

In some implementations, in each of the touch elements, the firstelectrode blocks coupled together by the connection part are configuredas a touch driving electrode, and the second electrode blocks coupledtogether by the bridge part are configured as a touch sensing electrode.

An embodiment of the present disclosure provides a display device,including the above touch substrate.

DESCRIPTION OF DRAWINGS

FIG. 1 shows a diagram of a touch substrate having an arc-shaped edge.

FIG. 2 shows a diagram of a touch substrate having an arc-shaped edge inan embodiment of the present application.

FIG. 3 shows a diagram of a touch substrate having an arc-shaped edge inan embodiment of the present application.

DESCRIPTION OF EMBODIMENTS

In order to make a person skilled in the art understand technicalsolutions of the present disclosure better, the present disclosure willbe described in detail below in conjunction with accompanying drawingsand specific embodiments.

FIG. 1 shows a diagram of a touch substrate having an arc-shaped edge.As shown in FIG. 1, the touch substrate includes a plurality of firstelectrodes (TX_(n) through TX_(n-3)) and a plurality of secondelectrodes (RX_(n) through RX_(n-3)). As an example, each of the firstelectrodes extends in a column direction, and the plurality of firstelectrodes are arranged in a row direction, each of the secondelectrodes extends in a row direction, and the plurality of secondelectrodes are arranged in a column direction.

Each of the first electrodes includes a plurality of first electrodeblocks, adjacent first electrode blocks are coupled together by aconnection part, each of the second electrodes includes a plurality ofsecond electrode blocks, adjacent second electrode blocks are coupledtogether by a bridge part, each of the first electrodes and each of thesecond electrodes intersect with each other at the connection part andthe bridge part, that is, the bridge part crosses the connection part,and an insulation layer is provided between the connection part and thebridge part.

As shown in FIG. 1, a cross point of the connection part and the bridgepart which are crossed with each other is taken as a center position,two ½ first electrode blocks coupled together by a single connectionpart and two ½ second electrode blocks coupled together by a singlebridge part constitute a touch element 10. That is, the touch substrateincludes a plurality of touch elements arranged in rows and columns. Ineach of the touch elements, for example, the two ½ first electrodeblocks coupled together by the connection part are configured as a touchdriving electrode 11, and the two ½ second electrode blocks coupledtogether by the bridge part are configured as a touch sensing electrode12.

It should be understood that, in each of the touch elements, forexample, the two ½ first electrode blocks coupled together by theconnection part may be configured as a touch sensing electrode, and thetwo ½ second electrode blocks coupled together by the bridge part may beconfigured as a touch driving electrode.

In the example shown in FIG. 1, the touch substrate has an arc-shapededge at a top left corner, thus in the touch element close to thearc-shaped edge, dimensions and shapes of the first electrode block andthe second electrode block proximal to the arc-shaped edge are limitedby the arc-shaped edge, and areas of the first electrode block and thesecond electrode block proximal to the arc-shaped edge are significantlyless than those of the first electrode block and the second electrodeblock distal from the arc-shaped edge, resulting in that the connectionpart and the bridge part in the touch element close to the arc-shapededge are too close to the edge of the touch substrate, thus increasing ashort-circuited risk between the connection part and the bridge part ofthe touch element and wires at the edge of the touch substrate, therebya lowered yield of the touch substrate is caused.

FIGS. 2 and 3 show examples of touch substrates each having anarc-shaped edge according to embodiments of the present application.

As shown in FIGS. 2 and 3, each of the touch substrates includes aplurality of touch elements arranged in rows and columns, each of thetouch elements includes first electrode blocks coupled together by aconnection part and second electrode blocks coupled together by a bridgepart, the bridge part crosses the connection part, and an insulationlayer is provided between the connection part and the bridge part. Theplurality of touch elements include a first touch element 1 close to anarc-shaped edge of the touch substrate and a second touch element 2 faraway from the arc-shaped edge of the touch substrate, a cross point ofthe connection part and the bridge part in the first touch element 1 isfar away from the arc-shaped edge of the touch substrate, and a crosspoint of the connection part and the bridge part in the second touchelement 2 is at a center position (e.g., geometric center position) ofthe second touch element 2.

In some implementations, by comparing a closest distance from the crosspoint of the connection part and the bridge part in the first touchelement 1 to the edge of the touch substrate with a predefined thresholdvalue, it is judged whether the cross point of the connection part andthe bridge part in the first touch element 1 is far away from the edgeof the touch substrate.

For example, in a case where the closest distance is greater than orequal to the predefined threshold value, it is judged that the crosspoint of the connection part and the bridge part in the first touchelement 1 is far away from the edge of the touch substrate.

For example, the predefined threshold value may be a closest distancefrom the cross point of the connection part and the bridge part in thesecond touch unit 2, arranged in a same row and in a same column as thefirst touch unit 1, to the edge of the touch substrate.

Referring to FIGS. 2 and 3, in the present embodiment, the first touchelement 1 close to an arc-shaped edge of the touch substrate includes atleast the touch element(s) whose edge includes at least a portion of thearc-shaped edge, and when the arc-shaped edge of the touch substraterelates to a relative large region, the touch element(s) whose edge doesnot include the arc-shaped edge but is adjacent to the touch elementwhose edge includes at least a portion of the arc-shaped edge may alsobe considered as the first touch element 1 close to an arc-shaped edgeof the touch substrate.

In some implementations, there are a plurality of second touch elements2, cross points of connection parts and bridge parts in the second touchelements 2 arranged in a same row are in a same row, cross points ofconnection parts and bridge parts in the second touch elements 2arranged in a same column are in a same column, the cross point of theconnection part and the bridge part in the first control element 1 islocated at a side of the row of cross points of the connection parts andthe bridge parts in the second touch elements 2 arranged in the same rowas the first touch element 1, away from the edge of the touch substrate,and at a side of the column of cross points of the connection parts andthe bridge parts in the second touch elements 2 arranged in the samecolumn as the first touch element 1, away from the edge of the touchsubstrate.

In some implementations, the cross point of the connection part and thebridge part in the first touch element 1 is at an approximate centerposition (e.g., approximate geometric center position) of the firsttouch element 1.

It should be noted that, in the embodiment, for example, the cross pointof the connection part and the bridge part in each of the second touchelements 2 is at the center position of each of the second touchelements 2, two ½ first electrode blocks are coupled together by theconnection part, and two ½ second electrode blocks are coupled togetherby the bridge part. The cross point of the connection part and thebridge part in the first touch element 1 may be not at the centerposition of the first touch element 1, and since the first touch element1 is close to the arc-shaped edge of the touch substrate and affected bythe arc-shaped edge of the touch substrate, dimensions and shapes of thefirst electrode blocks and the second electrode blocks in the firsttouch element 1 may be irregular, for example, may be different fromdimensions and shapes of the first electrode blocks and the secondelectrode blocks in the second touch element 2, as long as the crosspoint of the connection part and the bridge part in the first touchelement 1 is far away from the edge of the touch substrate.

In some implementations, dimensions and shapes of the first electrodeblocks and the second electrode blocks in the first touch element 1 maybe various respectively, and dimensions and shapes of the firstelectrode blocks and the second electrode blocks in the second touchelement 2 may be the same with each other.

In some implementations, a sum of areas of the first electrode blocks inthe first touch element 1 may be equal to a sum of areas of the secondelectrode blocks in the first touch element 1.

In the embodiment, in each of the touch elements, for example, the firstelectrode blocks coupled together by the connection part are configuredas a touch driving electrode 11, and the second electrode blocks coupledtogether by the bridge part are configured as a touch sensing electrode12. It should be understood that, alternatively, in each of the touchelements, the first electrode blocks coupled together by the connectionpart may be configured as a touch sensing electrode, thus the secondelectrode blocks coupled together by the bridge part are configured as atouch driving electrode.

In some implementations, in the row direction, the second electrodeblocks of adjacent touch elements are formed as an integrativestructure, and in the column direction, the first electrode blocks ofadjacent touch elements are formed as an integrative structure.

In the touch substrate of the embodiment, the connection part and thebridge part in the first touch element 1 close to the arc-shaped edge ofthe touch substrate are far away from the arc-shaped edge of the touchsubstrate, that is, are moved towards a center region of the touchsubstrate, thus a short-circuited risk between the connection part andthe bridge part in the first touch element 1 and wires at the edge ofthe touch substrate is lowered effectively, meanwhile, shapes of firstelectrode blocks and second electrode blocks in the first touch element1 are changed so that the sum of areas of the first electrode blocks inthe first touch element 1 and the sum of areas of the second electrodeblocks in the first touch element 1 are more balanced, thereby touchsensitivity of the touch substrate close to the arc-shaped edge isensured.

The touch substrate shown in FIG. 2 includes only one first touchelement 1. As shown in FIG. 2, the first touch element 1 is close to thearc-shaped edge of the touch substrate, the cross point of theconnection part and the bridge part in the first touch element 1 is at aposition A, it can be seen that, the position A is closer to the centerposition of the touch substrate than the cross point of the connectionpart and the bridge part in the second touch element 2 arranged in thesame column or row as the first touch element 1, avoiding the connectionpart and the bridge part at the position A being too close to the edgeof the touch substrate, thus a short-circuited risk between theconnection part and the bridge part of the touch element and wires atthe edge of the touch substrate is lowered effectively. Meanwhile,comparing with the second touch element 2, the shape of the first touchelement 1 is changed and the first electrode blocks and the secondelectrode blocks in the first touch element 1 are also changed so thatthe sum of areas of the first electrode blocks in the first touchelement 1 and the sum of areas of the second electrode blocks in thefirst touch element 1 are more balanced, thereby touch sensitivity ofthe touch substrate close to the arc-shaped edge is ensured.

It should be understood that, shapes and areas of the first electrodeblocks and the second electrode blocks in the first touch element 1 maybe set by persons skilled in the art as required, as long as they accordwith the concept of technical solutions of the present disclosure.

The touch substrate shown in FIG. 3 includes four first touch elements1. As shown in FIG. 3, when the arc-shaped edge of the touch substraterelates to a relative large region, a plurality of first touch elements1 are required to be formed close to the arc-shaped edge, the connectionpart and the bridge part of each of the first touch elements 1 are movedtowards the center position of the touch substrate.

As shown in FIG. 3, cross points of connection parts and bridge parts ofthe four first touch elements 1 are respectively at positions A, B, Cand D, it can be seen that, the connection part and the bridge part ateach of the positions A, B, C and D are closer to the center position ofthe touch substrate than the cross point of the connection part and thebridge part in the second touch element 1 arranged in the same column orrow as the corresponding first touch element 1, avoiding the connectionpart and the bridge part at each of the positions A, B, C and D beingtoo close to the edge of the touch substrate, thus a short-circuitedrisk between the connection part and the bridge part at each of thepositions A, B, C and D and wires at the edge of the touch substrate islowered effectively. Meanwhile, with respect to the second touch element2, the shape of the first touch element 1 is changed and the firstelectrode blocks and the second electrode blocks in the first touchelement 1 are also changed so that the sum of areas of the firstelectrode blocks in the first touch element 1 and the sum of areas ofthe second electrode blocks in the first touch element 1 are morebalanced, thereby touch sensitivity of the touch substrate close to thearc-shaped edge is ensured.

It should be understood that, shapes and areas of the first electrodeblocks and the second electrode blocks in each of the first touchelements 1 may be set by persons skilled in the art as required, as longas they accord with the concept of technical solutions of the presentdisclosure.

It should be noted that, shapes and dimensions of the four first touchelements 1 shown in FIG. 3 may be various respectively, and distancesfrom the positions A, B, C and D to edges of the corresponding firsttouch elements 1, where the positions A, B, C and D are located, closeto the arc-shaped edge of the touch substrate may be variousrespectively.

For example, the closest distance from the position A to the edge of thefirst touch element 1 (i.e., the arc-shaped edge of the touchsubstrate), where the position A is located, close to the arc-shapededge of the touch substrate may be greater than or equal to a firstpredefined threshold value, the closest distance from the position B tothe edge of the first touch element 1 (i.e., the arc-shaped edge of thetouch substrate), where the position B is located, close to thearc-shaped edge of the touch substrate may be greater than or equal to asecond predefined threshold value, the closest distance from theposition C to the edge of the first touch element 1 (i.e., thearc-shaped edge of the touch substrate), where the position C islocated, close to the arc-shaped edge of the touch substrate may begreater than or equal to a third predefined threshold value, and theclosest distance from the position D to the edge of the first touchelement 1 (i.e., the arc-shaped edge of the touch substrate), where theposition D is located, close to the arc-shaped edge of the touchsubstrate may be greater than or equal to a fourth predefined thresholdvalue.

For example, the first predefined threshold value may be a closestdistance from the cross point of the connection part and the bridge partin the second touch unit 2, arranged in a same row and in a same columnas the first touch unit 1 where the position A is located, to the edgeof the touch substrate, the second predefined threshold value may be aclosest distance from the cross point of the connection part and thebridge part in the second touch unit 2, arranged in a same row and in asame column as the first touch unit 1 where the position B is located,to the edge of the touch substrate, the third predefined threshold valuemay be a closest distance from the cross point of the connection partand the bridge part in the second touch unit 2, arranged in a same rowand in a same column as the first touch unit 1 where the position C islocated, to the edge of the touch substrate, and the fourth predefinedthreshold value may be a closest distance from the cross point of theconnection part and the bridge part in the second touch unit 2, arrangedin a same row and in a same column as the first touch unit 1 where theposition D is located, to the edge of the touch substrate.

In some implementations, the first electrode blocks, the secondelectrode blocks and the connection parts in the touch elements(including the first touch element 1 and the second touch element 2) ofthe embodiment are provided in a same layer and formed of a samematerial, and in such case, these structures may be formed by a singlepatterning process.

In some implementations, the first electrode blocks, the secondelectrode blocks and the connection parts of the embodiment all may beformed of indium tin oxide (ITO), certainly, technical solutions of thepresent disclosure are not limited thereto, the first electrode blocks,the second electrode blocks and the connection parts of the embodimentmay also be formed of other materials.

Similarly, the bridge part of the embodiment may be formed of conductivematerial such as metal, and the present disclosure is not limitedthereto.

It should be understood that, the embodiment of the present disclosureis described above by taking the touch substrate having only onearc-shaped edge as an example, however, the present disclosure is notlimited thereto, and in practical applications, the touch substrate mayinclude a plurality of arc-shaped edges separated from each other, andeach of the arc-shaped edges may result in generation of one or morefirst touch elements 1, which will not be detailed repeatedly herein.

An embodiment of the present disclosure further provides a displaydevice including the touch substrate described above. The display devicemay be any product or member having display function, such as a mobilephone, a tablet computer, a television, a display, a notebook computer,a digital photo frame, and a navigator.

Certainly, the display device of the embodiment may further includeother conventional structures, such as a power supply element, a displaydriving element and so on.

It should be understood that, the above embodiments are merely exemplaryembodiments for explaining principle of the present disclosure, but thepresent disclosure is not limited thereto. Various modifications andimprovements may be made by those ordinary skilled in the art within thespirit and essence of the present disclosure, these modifications andimprovements fall into the protection scope of the present disclosure.

1. A touch substrate having an arc-shaped edge, comprising: a pluralityof touch elements arranged in rows and columns, each of the touchelements comprises first electrode blocks coupled together by aconnection part and second electrode blocks coupled together by a bridgepart, the plurality of touch elements comprise multiple first touchelements close to the arc-shaped edge of the touch substrate andmultiple second touch elements far away from the arc-shaped edge of thetouch substrate, wherein the first touch elements comprise at least thetouch element whose edge comprises at least a portion of the arc-shapededge, and each of the first touch elements is directly adjacent to atleast another one of the first touch elements in a row or columndirection, connection parts in the second touch elements arranged in asame row are in a same row, connection parts in the second touchelements arranged in a same column are in a same column, the connectionpart in each of the first touch elements is located at a side of the rowof the connection parts in the second touch elements arranged in thesame row as said each of the first touch elements, away from an edge ofthe touch substrate, and at a side of the column of the connection partsin the second touch elements arranged in the same column as said each ofthe first touch elements, away from the edge of the touch substrate, andthe first touch elements comprises at least one first first touchelement and at least one second first touch element, the first firsttouch element is at a side of the second first touch element away fromthe second touch element in a row direction or in a column direction,and a distance from the connection part in the first first touchelement, to the row of the connection parts in the second touch elementsarranged in the same row as the first first touch element, or to thecolumn of the connection parts in the second touch elements arranged inthe same column as the first first touch element, is greater than adistance from the connection part in the second first touch element, tothe row of the connection parts in the second touch elements arranged inthe same row as the second first touch element, or to the column of theconnection parts in the second touch elements arranged in the samecolumn as the second first touch element.
 2. The touch substrate ofclaim 1, wherein bridge parts in the second touch elements arranged in asame row are in a same row, bridge parts in the second touch elementsarranged in a same column are in a same column, the bridge part in eachof the first touch elements is located at a side of the row of thebridge parts in the second touch elements arranged in the same row assaid each of the first touch elements, away from the edge of the touchsubstrate, and at a side of the column of the bridge parts in the secondtouch elements arranged in the same column as said each of the firsttouch elements, away from the edge of the touch substrate, and adistance from the bridge part in the first first touch element, to therow of the bridge parts in the second touch elements arranged in thesame row as the first first touch element, or to the column of thebridge parts in the second touch elements arranged in the same column asthe first first touch element, is greater than a distance from thebridge part in the second first touch element, to the row of the bridgeparts in the second touch elements arranged in the same row as thesecond first touch element, or to the column of the bridge parts in thesecond touch elements arranged in the same column as the second firsttouch element.
 3. The touch substrate of claim 2, wherein the bridgepart crosses the connection part, and an insulation layer is providedbetween the connection part and the bridge part, cross points of theconnection parts and the bridge parts in the second touch elementsarranged in a same row are in a same row, cross points of the connectionparts and the bridge parts in the second touch elements arranged in asame column are in a same column, a cross point of the connection partand the bridge part in each of the first touch elements is located at aside of the row of cross points of the connection parts and the bridgeparts in the second touch elements arranged in the same row as said eachof the first touch elements, away from the edge of the touch substrate,and at a side of the column of cross points of the connection parts andthe bridge parts in the second touch elements arranged in the samecolumn as said each of the first touch elements, away from the edge ofthe touch substrate, and a cross point of the connection part and thebridge part in each of the second touch elements is at a center positionof said each of the second touch elements.
 4. The touch substrate ofclaim 1, wherein the bridge part crosses the connection part, and aninsulation layer is provided between the connection part and the bridgepart, a connection line of cross points of connection parts and bridgeparts in adjacent ones of the first touch elements in a same row is notparallel to a connection line of cross points of connection parts andbridge parts in the second touch elements arranged in the same row assaid adjacent ones of the first touch elements, and a connection line ofcross points of connection parts and bridge parts in adjacent ones ofthe first touch elements in a same column is not parallel to aconnection line of cross points of connection parts and bridge parts inthe second touch elements arranged in the same column as said adjacentones of the first touch elements.
 5. The touch substrate of claim 1,wherein the bridge part crosses the connection part, and an insulationlayer is provided between the connection part and the bridge part, and aclosest distance from a cross point of the connection part and thebridge part in said each of the first touch elements to the arc-shapededge of the touch substrate is greater than or equal to a closestdistance from a cross point of the connection part and the bridge partin the second touch element, arranged in a same row or column as saideach of the first touch elements, to the edge of the touch substrate. 6.The touch substrate of claim 1, wherein the bridge part crosses theconnection part, and an insulation layer is provided between theconnection part and the bridge part, and a cross point of the connectionpart and the bridge part in said each of the first touch elements is atan approximate center position of said each of the first touch elements.7. The touch substrate of claim 1, wherein in said each of the firsttouch elements, a sum of areas of the first electrode blocks is equal toa sum of areas of the second electrode blocks.
 8. The touch substrate ofclaim 1, wherein the first electrode blocks, the second electrode blocksand the connection part in each of the touch elements are provided in asame layer and formed of a same material.
 9. The touch substrate ofclaim 1, wherein the first electrode blocks are arranged in a columndirection, and the second electrode blocks are arranged in a rowdirection, in the column direction, the first electrode blocks ofadjacent touch elements are formed as an integrative structure, and inthe row direction, the second electrode blocks of adjacent touchelements are formed as an integrative structure.
 10. The touch substrateof claim 1, wherein in each of the touch elements, the first electrodeblocks coupled together by the connection part are configured as a touchdriving electrode, and the second electrode blocks coupled together bythe bridge part are configured as a touch sensing electrode.
 11. Adisplay device, comprising a touch substrate, the touch substrate havingan arc-shaped edge and comprising a plurality of touch elements arrangedin rows and columns, each of the touch elements comprises firstelectrode blocks coupled together by a connection part and secondelectrode blocks coupled together by a bridge part, the plurality oftouch elements comprise multiple first touch elements close to thearc-shaped edge of the touch substrate and multiple second touchelements far away from the arc-shaped edge of the touch substrate,wherein the first touch elements comprise at least the touch elementwhose edge comprises at least a portion of the arc-shaped edge, and eachof the first touch elements is directly adjacent to at least another oneof the first touch elements in a row or column direction, connectionparts in the second touch elements arranged in a same row are in a samerow, connection parts in the second touch elements arranged in a samecolumn are in a same column, the connection part in each of the firsttouch elements is located at a side of the row of the connection partsin the second touch elements arranged in the same row as said each ofthe first touch elements, away from an edge of the touch substrate, andat a side of the column of the connection parts in the second touchelements arranged in the same column as said each of the first touchelements, away from the edge of the touch substrate, and the first touchelements comprises at least one first first touch element and at leastone second first touch element, the first first touch element is at aside of the second first touch element away from the second touchelement in a row direction or in a column direction, and a distance fromthe connection part in the first first touch element, to the row of theconnection parts in the second touch elements arranged in the same rowas the first first touch element, or to the column of the connectionparts in the second touch elements arranged in the same column as thefirst first touch element, is greater than a distance from theconnection part in the second first touch element, to the row of theconnection parts in the second touch elements arranged in the same rowas the second first touch element, or to the column of the connectionparts in the second touch elements arranged in the same column as thesecond first touch element.
 12. The display device of claim 11, whereinbridge parts in the second touch elements arranged in a same row are ina same row, bridge parts in the second touch elements arranged in a samecolumn are in a same column, the bridge part in each of the first touchelements is located at a side of the row of the bridge parts in thesecond touch elements arranged in the same row as said each of the firsttouch elements, away from the edge of the touch substrate, and at a sideof the column of the bridge parts in the second touch elements arrangedin the same column as said each of the first touch elements, away fromthe edge of the touch substrate, and a distance from the bridge part inthe first first touch element, to the row of the bridge parts in thesecond touch elements arranged in the same row as the first first touchelement, or to the column of the bridge parts in the second touchelements arranged in the same column as the first first touch element,is greater than a distance from the bridge part in the second firsttouch element, to the row of the bridge parts in the second touchelements arranged in the same row as the second first touch element, orto the column of the bridge parts in the second touch elements arrangedin the same column as the second first touch element.
 13. The displaydevice of claim 11, wherein the bridge part crosses the connection part,and an insulation layer is provided between the connection part and thebridge part, cross points of the connection parts and the bridge partsin the second touch elements arranged in a same row are in a same row,cross points of the connection parts and the bridge parts in the secondtouch elements arranged in a same column are in a same column, a crosspoint of the connection part and the bridge part in each of the firsttouch elements is located at a side of the row of cross points of theconnection parts and the bridge parts in the second touch elementsarranged in the same row as said each of the first touch elements, awayfrom the edge of the touch substrate, and at a side of the column ofcross points of the connection parts and the bridge parts in the secondtouch elements arranged in the same column as said each of the firsttouch elements, away from the edge of the touch substrate, and a crosspoint of the connection part and the bridge part in each of the secondtouch elements is at a center position of said each of the second touchelements.
 14. The display device of claim 11, wherein the bridge partcrosses the connection part, and an insulation layer is provided betweenthe connection part and the bridge part, a connection line of crosspoints of connection parts and bridge parts in adjacent ones of thefirst touch elements in a same row is not parallel to a connection lineof cross points of connection parts and bridge parts in the second touchelements arranged in the same row as said adjacent ones of the firsttouch elements, and a connection line of cross points of connectionparts and bridge parts in adjacent ones of the first touch elements in asame column is not parallel to a connection line of cross points ofconnection parts and bridge parts in the second touch elements arrangedin the same column as said adjacent ones of the first touch elements.15. The display device of claim 11, wherein the bridge part crosses theconnection part, and an insulation layer is provided between theconnection part and the bridge part, and a closest distance from a crosspoint of the connection part and the bridge part in said each of thefirst touch elements to the arc-shaped edge of the touch substrate isgreater than or equal to a closest distance from a cross point of theconnection part and the bridge part in the second touch unit, arrangedin a same row and in a same column as said each of the first touchunits, to the edge of the touch substrate.
 16. The display device ofclaim 11, wherein the bridge part crosses the connection part, and aninsulation layer is provided between the connection part and the bridgepart, and a cross point of the connection part and the bridge part insaid each of the first touch elements is at an approximate centerposition of said each of the first touch elements.
 17. The displaydevice of claim 11, wherein in said each of the first touch elements, asum of areas of the first electrode blocks is equal to a sum of areas ofthe second electrode blocks.
 18. The display device of claim 11, whereinthe first electrode blocks, the second electrode blocks and theconnection part in each of the touch elements are provided in a samelayer and formed of a same material.
 19. The display device of claim 11,wherein the first electrode blocks are arranged in a column direction,and the second electrode blocks are arranged in a row direction, in thecolumn direction, the first electrode blocks of adjacent touch elementsare formed as an integrative structure, and in the row direction, thesecond electrode blocks of adjacent touch elements are formed as anintegrative structure.
 20. The display device of claim 11, wherein ineach of the touch elements, the first electrode blocks coupled togetherby the connection part are configured as a touch driving electrode, andthe second electrode blocks coupled together by the bridge part areconfigured as a touch sensing electrode.